821289016112 has 10 divisors (see below), whose sum is σ = 1591247468748. Its totient is φ = 410644508048.

The previous prime is 821289016099. The next prime is 821289016133. The reversal of 821289016112 is 211610982128.

It is a self number, because there is not a number n which added to its sum of digits gives 821289016112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25665281738 + ... + 25665281769.

Almost surely, 2^821289016112 is an apocalyptic number.

It is an amenable number.

821289016112 is a deficient number, since it is larger than the sum of its proper divisors (769958452636).

821289016112 is a wasteful number, since it uses less digits than its factorization.

821289016112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51330563515 (or 51330563509 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 41.

The spelling of 821289016112 in words is "eight hundred twenty-one billion, two hundred eighty-nine million, sixteen thousand, one hundred twelve".